Several years ago, I was having lunch with two girlfriends. One was a no-makeup, Birks-and-jeans boho gal. The other was a consummate athlete who ran and biked all summer, ran and skiied all winter, and seldom wore anything flashier than a simple silver necklace. We chatted away about our husbands, our hobbies, movies we’d seen, new local restaurants, short- and long-term life goals. Then, somehow, the conversation turned to matters of grooming, and eventually the two of them were trading tips about the best place to get a Brazilian and great spots for cheap pedicures.